Typewriter-desk



IVI. F. SITTA.

TYPEWRITER DESK.

APPLICATION FILED SEPT. 20, 1920.

1,370,373, Patented Mar. 1, 1921.

1 la ,nl 74, BY WITNESSFVUQ/ y I ATTRNEY PATENT OFFICE.

METHOLD F. SITTA, CHICAGO, ILLINOIS.

TYPEWRITER-DESK.

Specification of Letters Patent.

Patented Mar. 1, 1921.

Application led September 20, 1920. Serial No. 411,433.

tion o for lifting the typewriter table from a folded posifi n t a horizontal position.

Another object is to provide means for maintaining the table in raised position.

nother object is to provide a new and improved track system i'or such a device.

)another object is to provide a locking means tor maintaining the table in its folded or inoperative position.

another object is to provide a trigger for releasing said table from said locking means.

@ther objects will appear from the following description and claims, and all of these objects are accomplished by the mechanism shown in the accompanying drawing consisting oit one sheet, in which:-

Figure 1 is a tront-to-rear vertical section of a desk embodying my improvements. the typewriter table being shown in its 'folded or concealed condition.

Fig. 2 is a fragmentary view of the same, showinlthe table in its elevated position.

Fig. o is a detail sectional view taken verticalij,T through one of the track members and the adjacent parts.

Fig. 4 's a top plan view of the track and adjacent parts on one side of the desk.

Like characters of reference refer to like parte in all views.

This invention contemplates the provision of a means which may be attached to an ordinary desk between the inner vertical walls thereof and which may be operated in the same manner as a drawer of the desk to bring a concealed typewriter into operative condition.

Referring more particularly to the drawings, 1 represents a desk, and 2 represents one ot the inner walls thereof. To this inner wall are secured pivot members 3 upon each of which is rotatably mounted a roller 4. These rollers 4 are adapted to work in the upper channel of an S-shaped track member in the lower channel of member 5 are rollers G, each ot which is mounted to rotate upon a pivot pin 7 lThe pivot pins 7 are securely attached to a bai` 8. The chan nels may be partly or wholly closed at the ends to prevent escape of the rollers. This mechanism is duplicated upon the opposing inner wall oil" the desk, as will be readily understood.

A member or board 9 is provided and normally is in the position shown in Fig. 1', in which it gives the appearance of being a drawer o1 the desk, and conceals a typewriter indicated by the dotted lines at 10. The typewriter is secured to the member 9 but may be slidably secured ,so as to be capable of moving forward on the member 9 when the latter is raised to the position shown in Fig. 2. The board 9 is pivotally secured at 'its opposite sides to the bars 8 as at 11, and

is provided at the sides of its inner end with slots 12 in which are slidably mounted bolts 13, to the outer ends of which are pivotally secured the lower ends of links 14. The up per ends of the links 14 are pivotally secured to the members 8 as at 15.

Secured to each of the links 14 between the ends thereof are bolts 16 and to each of the bolts 16 is attached one end of a stout contractile spring 17, the other ends of the springs being secured to fingers 18 on the bars 8. A tripper member 19 is pivotally mounted at 20 on each of the bars 8 and eX- tends forwardly and rearwardly from said pivot. The rearwardly extending portion of the member 19 is provided with a notch or shoulder 21 which is adapted to hook over bolt 16 and maintain the bar 14 in the position shown in Fig. l and against the influence of spring 17. V

A block 22 is secured to each of the side walls 2, for a purpose to be presently explained.

In operation, the device is normally in the position shown in Fig. 1. The operator pulls out on the board 9 as if it were a drawer, and after the device has been drawn forward fully, the front ends of trippers 19 are depressed which releases the springs 17 and the latter drawy the links up to the position shown in Fig. 2, thereby raising the typewriter to position for use. The rear end ot the member 9 is thus brought above the blocks 22, and the boardv is moved back slightly over these blocks which hold the hoard in raised position. To return the device to normal position, merely pull forward until member 9 is disengaged from blocks 22, then press down the rear end of the board until the bolts 16 are caught in notches 2l, and then move the entire structure rearwardly into the desk.

While I have described what I deem to be the most desirable embodiment of my invention, it is obvious that many of the details may be varied without in any way departing from the spirit of my invention, and I therefore do not limit myself to the exact details of construction herein set forth nor to anything less than the whole oi my invention limited only by the appended claims.

What I claim as new and desire to secure by Letters Patent is 1. In a device of the class described, the combination of a desk, rollers mounted on said desk, a bar provided with a double channel, one of the channels of which is adapted to coperate with said rollers,V a movable support, a plurality oi rollers mounted on said support and adapted to cooperate with the other channel ot' said bar, a typewriter support pivotally mounted on said movable support, and a spring for moving said typewriter support t'rom one position to another.

2. In a device of the class described, the combination of a desk, rollers mounted on said desk, a bar provided with a double channel, one of the channels of which is adapted to coperate with said rollers, a

movable support, a plurality ot' rollers mounted on said support and adapted to co operate with the other channel oi said bar, a typewriter support pivotally mounted at one end on said movable support, a link connectine said movable support with the other end of said typewriter support, and a spring secured to said link for movingsaid typewriter support from one position to another.

3. In a device ot the class described, the combination ot a desk, 'rollers mounted on said desk, a bar provided with a double channel, one of the channels ol which is adapted to coperate with said rollers, a movable support, a plurality ot rollers i mounted on said support and adapted to cooperate with the other channel ot said bar, a typewriter support pivotally mounted at one end on said movable support, a link connecting` said movable support with the other end ot said typewriter support, a spring secured to said link for moving said typewriter support irom one position to another, and means for rendering said spring` ineffective.

et. In a device ott the class described, the combination of a desk, rollers mounted on said desk, a bar provided with a double channel, one of the channels ot which is adapted to coperate with saidV rollers, a movable support, a plurality ot rollers mounted on said support and adapted to cooperate with the other channel of said bar, a typewriter support pivotally mounted at one end on said movable support, a link connecting said movable support with the other end et said typewriter support, a spring secured to said link tor movingv said typewriter support from one position to another, and means for rendering,- said spring ineffective and eifective.

In a device ot' the class described, the

vcombination of a desk, rollers mounted on said desk, a bar provided with a double channel, one of the channels of which is adapted to coperate with said rollers, movable support, a plurality oit' rollers mounted on said support and adapted to cooperate with the other channel oisaid bar, a typewriter support pivotally mounted on said movable support, a link connecting said movable support with the other end of said typewriter support, a bolt secured to said link, a spring secured to said bolt and adapted to move said typewriter 'support irom one position to another, and a member pivoted on said movable support and cooperative with said bolt for controlling said spring.

In testimony whereof I have affixed my signature.

METHOLD F. SITTA. 

